Re: Japan - Fukushima Daiichi Nuclear Power Plant Crisis - Units 1 - 6 Reports, News, Graphics
Re: Japan - Fukushima Daiichi Nuclear Power Plant Crisis - Units 1 - 6 Reports, News, Graphics
Press Releases
Press Release (Mar 16,2011)
Impact to TEPCO's Facilities due to Tohoku-Taiheiyou-Oki Earthquake (as of 2:00PM)
Below is the status of TEPCO's major facilities that suffered from the
Tohoku-Taiheiyou-Oki Earthquake that occurred at 2:46PM, March 11th 2011.
*new items are underlined
[Nuclear Power Station]
Fukushima Daiichi Nuclear Power Station:
Units 1 to 3: shutdown due to earthquake
Units 4 to 6: outage due to regular inspection at the occurrence of
earthquake
*The national government has instructed to evacuate for those local
residents within 20km radius of the site periphery and to remain
indoors for those local residents within 30km radius of the site
periphery.
*Since the value of radioactive materials (iodine, etc) at the site
(outside) measured by monitoring car exceeded the ordinary level,
it was determined that a specific incident stipulated in article 15,
clause 1 occurred (Extraordinary increase of radiation dose at site
boundary).
- 4:17 pm, March 15th at the main gate of the site
- 11:05 pm, March 15th at the main gate of the site
* Unit 1
The explosive sound and white smoke was confirmed near Unit 1 after
the big quake occurred at 3:36pm, March 12th. We have started sea
water injection at 8:20 pm and then boric acid into the reactor.
*Unit 2
At 1:25 pm, March 14th, since the Reactor Core Isolation Cooling System
has failed, it was determined that a specific incident stipulated in
article 15, clause 1 occurred (failure of reactor cooling function).
At 5:17 pm, while the water level in the reactor reached the top of the
fuel rod, we have restarted the water injection with the valve operation.
At approximately 6:14 am, March 15th, the extraordinary sound was
confirmed near the suppression chamber and the pressure inside the
chamber decreased afterwards. It was determined that there is a
possibility that something extraordinary happened in the suppression
chamber. While sea water injection to the reactor continued, TEPCO
employees and workers from other companies not in charge of injection
work started tentative evacuation to a safe location.
Sea water injection to the reactor is still under operation.
*Unit 3
At 6:50 am, March 14th, while water injection to the reactor was under
operation, the pressure in the reactor containment vessel increased to
530 kPa. As a result, at 7:44 am, it was determined that a specific
incident stipulated in article 15, clause 1 occurred (abnormal increase
of the pressure of reactor containment vessel). Afterwards, the pressure
has gradually decreased (as of 9:05 am, 450 kPa).
At approximately 11:01 am, March 14th, an explosion followed by white
smoke occurred near Unit 3. 4 TEPCO employees and 3 workers from other
companies (all of them are conscious) have sustained injuries and they
were already dispatched to the hospital by ambulances.
*Unit 4
At approximately 6:00 am, March 15th, an explosive sound occurred and
the damage in the 5th floor roof of Unit 4 reactor building was
confirmed. At 9:38 am, the fire near the north-west part of 4th floor
of Unit 4 reactor building was confirmed. At approximately 11:00 am,
TEPCO employee confirmed that the fire was off.
At approximately 5:45 am, a TEPCO employee discovered a fire at the
northwest corner of the Nuclear Reactor Building. TEPCO immediately
reported this incident to the fire department and the local government
and prepared to extinguish the fire. However, during an inspection at
approximately 6:15 am, TEPCO staff found no signs of fire.
...
http://www.tepco.co.jp/en/press/corp-com/release/11031608-e.html
